Gas administration



Jan-17,' 1939. v I .1. L. BLooMHEm-QT 2,144,479

GAS ADMINISTRATION Jan. 17, 1939. J. BLOMHEART 2,144,479

GAS vADMINIsTRATIoN l Filed Dec. 7, 1936 5 sheets-smeet` 2 Jan. 17,1939.'

JQ L., BLOOMHEART 2,144,479

GAS ADMINISTRATION Filed Dec. 7, 1936 5 Sheets-Sheet 3 l Y Jan. 17,1939. ,1. L. BLQMHEART 2,144,479

v GAS-ADMINISTRATION Filed Dec. 71, 1936 5 Sheets-Sheet 4 Jan. 17, 1939.j. 1 BLOOMHEART 2,144,479

GAS ADMINISTRATION Filed De, 7', 195e 5 sheets-sheet 5v Tgp? I //6Patented Jan. 17, 1939 PATENT OFFICE GAS e ADltIINISTRATION John L.Bloomheart, Toledo, Ghio, assignor to Martha F. McKesson, Toledo, OhioApplication December '1, 1936, Serial No. 114,587

13 Claims.

'This invention relates to control of gas for respiration, especially inconnection with attention to a patient. f This invention has utilitywhen incorporated in safeguards having to do with supply-gas elficiencyand economy, more particularly in assembly for control of gases andtaking out of carbon dioxid gas as exhaled, with residual gas inrespiratory circuit for rebreathing.

Referring to the drawings:

Fig. 1 is a fragmentary view of an embodiment of the invention as anabsorber in connection with anesthetic administration equipment;

. Fig. 2 is a sectionon the line II-II, Fig. 1, for

the valve adjacent the mask; e

Fig. 3 is a plan View of the absorber head with adjacent ether cup,parts being broken away;

Fig. 4 is a fragmentary view on the line IV-IV, Fig. 3, showing a checkvalve against flow from the absorber;

Fig. 5 is a fragmentary view on the line V-V,

Fig. 3, showing the check valve against return of gas to the absorber;

of the time indicator as in use by the absorber cartridge; e

Fig. 7 is a section Von the line VII-VII, Fig. 3, showing the absorbercondition with the valve in elevation;

Fig. 8 is a section on the line VIII-VIII, Fig. 7, showing the auxiliarysupply as independent of valve position in the absorber;

Fig. 9 is a' section on the line IX-D{, Fig. 7, showing theV valvecontrols in port relation for on, not intermediate of on, nor change;

Fig. 10 is a section on the line X--X, Fig. '7, showing the positioningof the valve openings therebelow;

Fig. 1l is a side elevation of the valve from the left of Fig. '1, andaccordingly in absorber "on position;

Fig. 12 is a view similar to Fig. 11, with the y valve shifted clockwiseto oi position (Fig. 3) 45 for the absorber, the assemblyherewithshowing that in this set-up the breather bag is still connectedfor operation as in Fig. 11;

Fig. 13 is a view similar to Fig. 11 with the valve shiftedcounter-clockwise (Fig. 3) to absorber "change through 'the headindependently of into the absorber;

Fig. 14 is a view on the line XIV-XIV, Fig. 7, showing the auxiliary gascontrol and ow indication therefor;

Fig. 6 isa section on the line'VI-VI, Fig. 3,r

position, with all port connectionsv (Cl. 12B-191) Fig. 15 is a sectionon the line XV-XV, Fig. 14;

Fig. 16 is a section on the line XVI-XVI, Fig. 14;

Fig. 1'? is a section on the line XVII-XVII, Fig. 3, through the ethercup;

Fig. 18 is a section on the line XVIII-XVIII,l Fig. 17, showing thevalve in position to cut out the ether cup;

Fig. 19 is a section on the line XIX-XIX, Fig.' 17, showing the valveand depending partition therefrom; and

Fig. 20 is a plan view of the valve of Fig. 19.

Gas administering machine, as for anaesthesia, is shown provided withsupporting stem I to head 2. From pressure gas supply cylinder,V duct 3may extend to valve 4, say for nitroi'isA oxid supply on one side of thehead 2 with say analogous equipment on the opposite side for oxygen.From pressure gas supply tank, duct 5 may extend to manuallycontrollable valve 6 for supplemental or different gas supply asethylene.v Pulse pressure device may be cut in byv valve 1 having duct 8leading therefrom. The head 2 is provided with rotary valve 9 as owproportion for the gas suppliedby the valve 4A and its companion, suchgas being for supply from low pressure chambers or bags I0 andmixture-containing .rebreathing bag II for passagev36- 1936, McKesson. f

In carrying out the invention herein, intermediate equipment isintroduced for gas control and even to the degree of completesubstitutionv therefor as may be found acceptable by the operator. Tothis end, head I1 of absorber is for removing an ingredient orproportion of the exhaled gas, say carbon dioxid, by aid of soda lime.This head I1 is provided with ears or lugs I8 (Figs. l, 8) to receivestud bolts I9. The remote portions of such stud bolts are engaged byknurled nuts 2U for abutting forks 2| ixed with chamber 22 having upperflange 23, brought by the nuts 20 into clamping position at compressiblegasket 24 about open bottom 25 of valve chamber 26 in the head II. Thischamber 22 has depending neck 21 therefrom for mounting sure in thesystem adjusted by knurled handle 14 (Fig. 1) for relief valve 15 in thefitting 44 adjacent the mask I4.

This replenishment for consumed gas, whether oxygen, ethylene, or someother type ofgas as" cyclopropane (03H6) may be by seepageV say'ofoxygen through duct 16 (Fig. 7) and other gas 11 with sucient quantitythereof to make response as desired. These ducts 16, 11, are adjacent anannular groove 18 inthe head 35, which. has communication out of suchgroove by downward groove portions 19. Thus at` any open or closedposition as determined by the handle 55, there is communication to thechamber portion 28 in communication by port 54 to under clearance region25 or directly into the duct 42.

Supply gas as oxygen may be past a reducing valve at an oxygen supplycylinder, thence by duct 80 (Figs. 7, 14), and fitting 8|, thereadditionally controlledby needle valve 82 to flow by Way 83 into duct 84and fitting 85 mounting tube 86 having externally reduced diameterportion 81 and terminal port 88. Capping this tube 86 is closed end 89of sleeve or cup 98 telescoping this tube 86 and as shifting away fromthe terminus 88 having increased clearance relatively to the sleeve ortube 86. The flow of supply gas, whether oxygen or other gas under thecontrol rate, accordingly forces this cup or capped sleeve 89, 90, todifferent positions in its telescoping relation to the sleeve or tube 86according to the volume of this gas.

About this cap and supply tube is housing 9| having Window 92, in whichis transparency 93 closing the chamber in this housing 9|- by plug 94against gasket 95, .holding the transparency 93 in the .assemblyagainstthe opposing gasket 98. The cylindrical transparency 93 hasr clearanceas to the housing 9| in which is strip 91 disclosing scale 98 throughthe Window openingV 92, which scale is obscured by the rise of the cup89, 98, in front thereof, thusgiving the operator ber 99 may passtherefrom by the duct 16 into the headk |1 ask an indicated control forcontinu-V ous replenishment. y

The duct 42 herein is assembled by fitting |80 in register with ductV|0| in head |02 of the ether cup, or supplemental anaesthesia agentsupply. 'I'his head |02 has threaded connection |83 (Fig. 17) with whichmay be assembled ring |04 of chamber |85, assembled into sealingposition at gasket |86. This head |02 has L-fitting |81 (Fig. 19) forfunnel |08 having removable plug |89. Insertion of this plug |09 inthread assembly to compress gasket ||8 seals against escape of vaporfrom this. vaporizer, while opening allows admission of anaesthesiasubstance to be vaporized, as ether. This may be poured into the chamber|85 to the desired amount and the plug |09 replaced. In this chamber |85there depends fibrous material between wire screen or fabric sides l2,anchored by clips ||3 as a partition'assembled by screws ||4 with theunder side of valve ||5 fitting in the head |82. This valve has directcross-o-ver port ||6 (Fig. 18) cutting out or by-passing this vaporizeror ether chamber |85.

At shift position, indicated by pointer I1 (Fig. 3) there may be fromthe flll position as bypassing for the valves (Figs. 17, 18) a shifttoward on position as indicated (Fig. 3) by graduations ||8, therebycontrolling the extent of opening of ports.V H9, |20 (Fig'.18),'thusal'- lowing gas to enter at one side lof the'partition III, ||2, andchecking ilow thereof against exit' except on the opposite side ofsaidpartition ||2. This foraminous, absorbentpartition-is effective toimpregnate the passing supply gases with desired anaesthesia materialfrom the vaporizercup, thence to AoW by passage |2| and.y fitting '|22into the duct 43 toward the gas.

maskk |4.

Accordingly, in Ythis set-up, there be lective use in this respirationequipment of .one

or more andany combination of thisA setjup fin the region of control,and there is thus infthisy selective handling practical manipulationofve'r, an indefinite period for anaesthesia in anyde-,J sired degree,absorptionwith areplenishment.,

selected, and supplemented by a vaporizer. The

vaporizer may be cut out with the absmberforanaesthesia administeringmachine or respirator left in. The absorber may be operated alone,` thatis, Vwithout the anaesthesia machine4 or thev vaporizer.` Theanaesthesia machine y.may .be

operated with or without the absorben'l'with or Without the ether cupor' vaporizer. Thisselecas to replacing of supply'cylinders on theanaesthesia machine or replacing of supply cylinders at the absorber.l

In the use of the ether cup for charging such" by pouring ether into thefunnel |08,such passes by Way of the L-tting |81 and port |23 by Wayv ofclearance |2 in the valve 5, thereby to enter the chamber |85 on oneside ofthe partition H2. This entrance is not 4against pressureof vaporin this chamber, forwhn theports |23, |24, are in register With ,thefitting |01., port'l25 inthe lvalve I l5 is in register with outlet port|26.

As charging of the ether cupis effected, it is desirable upon, replacingof the plug |89'that there i,

additionally be sumcie'nt-rotation ofthe valve ||5..to bring the port|25 rout of register with the'port |26.

The'one way flow from thek absorber into they duct 43 from the passage42 is through annular series of openings |21 (Figs. 3, 5) into theregion toward the duct 43. However, any reversal .of

flow causes ring vdisk |28 to slapV back against, these ports |21 andclose off reverse flow. Oppositely to this action, iiow from the duct 53is normally toward the head |1 by way of ports |29 (Figs. 3, 4). Anyreversal of flow, that is, from the head |1 toward the duct 53 causesdisk |38 to move in closure position against the ports |29 and shuts offas .an effective check valve this direction of current flow.

In the matter of the continuous replenishment gases at the absorber,such may be as to one port or duct 18 or to a plurality thereof, twobeing shown, the second one as duct 11. In the event the head |1 beequipped for more than one of these replenishments and but one is to beused, the unused duct 11 may be shut off by plug |32 (Fig. 1). l

What is claimed and it is desired to secure by United States LettersPatent is:

1. A gas administering machine assembly including a respirable gassupply, a delivery nozzle, an absorber therebetween, a rebreathing bagwith which said absorber is in series, said absorber being toward thenozzle from said bag, and valve mechanisms for gas delivered by thesupply, controllable to isolate said absorber with the supply incommunication with the delivery nozzle independently of through saidrebreathing bag and absorber, one of said mechanisms including aproportioning valve.

2. In gas administration, a delivery nozzle, an absorber in circuit withthe nozzle, and a control valve at the absorber for the circuitincluding a seat, and absorber-material-providing cartridge in saidseat, said valve being adjustable to isolate said absorber from thecircuit for cartridge replacement.

3. In gas administration, a gas supply, a delivery nozzle, and a circuittherebetween embodying an absorber chamber, a valve providing intake tosaid chamber, an over-volume receiver connected to said chamber, saidvalve providing an outlet port for the chamber as in series fromthe'receiver, and an absorber material partition between said port andchamber, said valve being adjustable to connect said supply to saidnozzle and isolate the receiving chamber as a unit from said circuit.

4. In gas administration, a chamber, a valve, a housing movable with thevalve providing a seat'for the chamber, said housing having a port intothe valve and therefrom, and a control for the valve for isolating thechamber.

In gas administration embodying an absorber comprising a chamber, avalve, a housing movable with the valve providing a seat for thechamber, and a housing as to which the valve is movable and having aYWall opposite from the chamber, a valve seat for said valve between thewall and chamber seat, and control means for the absorber protrudingthrough the wall.

6. InV gas administration, a valve housing having a wall, acharnber seataway from the wall, there being a valve seat having flaring taper fromthe wall toward and concentric with the chamber seat, a valve in theseat, .a chamber extending from the chamber seat, and partition means inthe chamber movable with the valve.

7. In gas administration, a valve housing having a wall, a chamber seataway from the wall, a valve seat having flaring taper from the walltoward the chamber seat, a valve in the seat, a chamber extending fromthe chamber seat, and partition means in the chamber connected to thevalve, and valve control means protruding through the wall.

' 8. In gas administration, a chamber carrier, a valve housing, a valvein the housing and concentric with the carrier, a chamber mounted by thecarrier coaxial with and controllable by said valve, Aa respirable gassupply to said housing controlled by said valve, anda respirable gassupply to said housing independent of said valve.

9. In gas administration, a chamber carrier, a valve housing, a valve inthe housing and concentric with the carrier, a chamber mounted by thecarrier coaxial with and controllable by said valve, a respirable gassupply to said housing controlled by said valve to by-pass said chamber,and a respirable gas supply to said housingindependent of said valve andcontinuous whether or not said valve be by-passed.

l0. In gas administration, a chamber carrier, a valve housing, a valvein the housing and concentric with the carrier, a chamber mounted by thecarrier coaxial with and controllable by said valve, a respirable gassupply to said housing controlled by said valve, a respirable gas supplyto said housing independent of said valve, and an indicator of gasvolume flow for one of said supplies.

11. A plug valve, a housing therefor, a chamber, a partition in thechamber directly connected to the valve, said housing having a portinlet to and port outlet from the valve on opposite sides of thepartition, and said valve being .adjustable to have port means directlybetween the housing ports for flow directly through the valveindependently of about said partition or through said chamber.

12. In gas administration, a machine head, a valve device attachable tosaid head, a chamber mounted on the device, a tube insaid chamber havingan outlet port, a skirted cap for the tube telescopic therewith todiierentl clearance areas Vbetween the tube and skirted cap.

13. In gas administration, a machine head, a valve device attachable tosaid head, a chamber mounted on the device, a tube in said chamberhaving an outlet port, a skirted cap for the tube telescopic therewithto different clearance areas between the ktube and skirted cap, saidchamber having graduated Vposition-disclosing means between the tube andskirted cap.

JOHN L. BLOOMHEART. f

